Authorities busted a suspected marijuana grow house out of two units of an apartment building on Thursday afternoon.

The discovery was made at an apartment building on Jacobus Place just before 1 p.m.

Firefighters initially responded to reports of high gas levels in the building and traced the high levels to two apartments on the fifth floor.

As a precaution, the fourth and fifth floors of the building were temporarily evacuated until the levels could subside.

No one was in the two apartments at the time. Police are pulling records to determine the identity of the renter.

Multiple plants and equipment were confiscated by police.

Illegal marijuana grow house bust in the Bronx. This is just first batch confiscated by NYPD. FDNY initially responded to high gas levels in building, traced to 2 5th floor apts. Less than mile away from where FDNY Chief Michael Fahy was killed in marijuana grow house explosion. pic.twitter.com/h27nPIJhZM